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E. F. BRITTEN, JR

. CALCULATING MACHINE June 23, 1931.

Filed Sept. 8. 1930 3 Sheets-Sheet 1 i Q .0. v z ,4 w QT. \D 1 m mfiwwwwwmw w m m v v 0 w 0000000000 0 0; 0000000000 0 w a 0000000000 0 m y 0000000000 0 y w 0000000000 0 41m F 0000000000 0 w 0wwww wmww 1 ww 7 0, Q vaN hH Q H 00000000000 000 0000 mm a H 00000090000000.000000 US N f N L Q E. F. BRITTEN, JR

June 23, 1931.

CALCULATING MACHINE v Filed Sept. 8. 1930 3 Shee ts-Sheet 2 June 23, 1931. E. F. BRITTEN, JR

CALCULATING MACHINE s Sheets Sheet 3 Filed Sept. 8. 1930 v Patented 'June23, 1931 xnwm r-{iam'rnm .13., Moos, imw assreuon. T momma can CULATING HA GHIHE' COMPANY, 0! ORANGE, NEW JERSEY, A. CORPORATION 02 cmna'rnm nacnnm i human s mis a, mac, Serial 1.. 480,475, imam France January 15, 1080.

i This invention relates to calculating ma.-

chines, and particularly to means for latching and Y unlatching' intermediate gear frames, and one of the objects of the invention is to provide means for automatically unlatching the intermediate gear frames of a calculating machine uponin'itiating a the denominational shifting of the carriagp.

carriage shift, and for automatically move ing the frames so as to swing the intermediate gears out of possible interference with Another object is to provide ,suita means for automaticallyreturning'the intermediate gear frames to effective position upon initiatin a'cycle of operation of the machine, and efore the differential actuat .mg gears have turned to actuating position.

Another object is to provide novel means for latching the intermediate gear frames in effective osition.

Other ob ects willappear from the following description and ap ended. claims.

1 Fig. 3 1s a similar view showing the carriage in transit and the intermediate frames unlatched. and moved to ineffective position.

' market as the Monroe calculating machine,

Fig. 4 is a fragmentary front elevation of the carriage-shifting means.

Fig. 5 is a fragmentary vertical sectional view of the same; f

Like characters of reference refer to like parts in all views.

The invention is shown as embodied in a machine of the general type known on the and of the s ecific type dis osed in the ap-, plication of F. Britten, r., Serial Number 349,449, filed March 23,1929, entitled Calculating machine. While the invention has been shown as embodied in this lar-type of machine, this is to un erstood as merely illustrative, as the invention .is

e lbroinily applicable to calculating machines,

articu-' and is not limited to the specific form shown.

Referring to the drawingsin detail, 10

mani ulative members as follows: digit setting eys 12, zero keys 13, keyboard clearing key 14, repeat key 15, non-repeat key 16, and

operating key or plus bar 17, subtract operating key or minus bar 18, division lever 19,

counter rotation-reversing shift lever 20,

multiplying keys 21, accumulator and coun- 'ter clear keys 22, 23, 24, and 25, and accumulator selecting lever 26.

- Themachine may be driven by an electric motor (not shown) orby a hand crank 27. vA carriage is shown at 28 and carries 1 a front set of register wheels 29, a rear set ters 31and 32, the revolution counting wheels 31 being of the nineteen point type (having. no carrying mechanism and each bearing the nine significantdigits running 111 reverse directions from" acommon zero,

one set of significant digits being coloreddifferent from the other),and .thecounters 32 being of the usual ten point t ype with Y'carr 'ng mechanism. v v

' ilethe selecting and actuating means; used in this type of machine have been fully '70 ,of register wheels 30 and twosets of counset forth in said a plication, certain of the 1 parts will be mentloned and their functions riefly stated. 1 g Amounts set up in'the digit setting keys 12 and thereby on difierential actuating gears 33 and 34 (Fig. 2). ma be registered upon the accumulators 29 an 30 by the o' eration of difierentialgear or selector sha s 35' and 36 and" their associated shafts 37 and 38 whereon the tens-carry members are mounted. The shafts 37 and 38 are supported by swinging frames 39 and 40, said frames also supporting shafts 41 and 42 which carry intermediate ears 43 and 44. In the normal position 0 v the frames 39 and 40, the gears 43 and 44 mesh with rev ferential actuators 33 and 34. The shafts 37 and 38 are connected by modified Oldham couplings indicated at and 46 to the driving trains (not shown). These Oldham couplings ermit the desired swinging movement 0 the frames 39 and 40 for moving the gears 43 and 44 and the associated carry members out of the way of the carriage and associated parts without disengagement of the shafts 37 and 38 from their operating means.

The carriage 28 may be moved from one denominational position to another by rotating a handle 47 mounted on the front end of a shaft 48. Shaft 48 is supported in bearings secured to the under side of the keyboard frame 11 and is provided at its-rear end with a crank 49 carrying oppositely disposed rollers 50, which rollers normally engage between adjacent teeth of a rack bar 51 (see Fig. The rack bar 51 is preferably formed integrally with rearwardly extending arms 52, there being an arm 52 at each end of rack bar 51. The. arms 52 are ivoted at 53 to the ends of the carriage 28 suitable pivot studs. The arms 52 have rigidly secured to them a yoke consisting of side arms 54 and a cross-bar 55. Riding on the upper edge of cross-bar 55 is a roller 56 carried by the upper end of an arm of a bell-crank 57 pivotally connected by an ad justable pivot to a locking lever 58. Springs 59 tend constantly to rotate arms 52 counterclockwise (as seen in the drawings),'thereby pressing rack bar 51 against the rollers and tending to lower the cross-bar and connected parts. A spring 60 tends constantly to rotate bell-crank 57 counterclockwise (as seen in the drawings), thereby insuring the position of roller 56 over bar 55. The lever 58 is pivoted on a stud 61 secured to the adjacent side frame of the machine. This lever 58 carries a stop tooth 62 which, when the machine is operating, rides on a disk 63 so as to prevent shifting .of the carriage. The disk 63 has a notch indicated at 64, and this notch is opposite the stop 62 when the machine is in normal or full cycle gosition, so as to permit carriage shifting. uring a carriage shifting operation, the stop 62 enters the notch 64 and prevents operation of the machine.

When the handle 47 is operated to effect a denominational shift of the carriage, it

- will be seen that during about the first quarter of the necessary half-revolution of shaft 48, the rack bar 51 and connected parts are lifted rapidly and very slight lateral movement of the carriage is caused. Likewise,

during about the last quarter of the half revolutiomthe bar 51 and associated parts descend rapidly with a very slight lateral movement of the carriage. But between this period of rapid rise and the period of rapid fall, is a period ofrapid translation during which the carriage is moved rapidly crosswise but with a ver slight raising and lowering of bar 51. his gives time at the beginning of a carriage shifting operation for the unlatching of the intermediate gear frames 39 and 40 and the swinging of the same to remove the intermediate gears 43 and 44 out of the paths of the dials of accumulators 29 and 30 before the latter are moved by the carriage sufficiently to strike the intermediate'gears, and incidentally provides for a gradual slowing down of the carriage during the last part of the halfrotation of shaft 48. The swinging of the frames causes a corresponding swinging of the tens-carry members supported thereby. The intermediate gear frames 39 and 40 are pivotally supported by respective pivot rods 65 and 66 and are pivotally connected to respective ends of a link 67 so that swinging of one frame will always be accompanied by a simultaneous and equal swinging of the other frame. A spring 68 anchored at one end to any suitable stationary part of the machine, and connected at the other end to link 67 tends constantly to rock the .frames 39 and 40 counter-clockwise. Such movement of the frames is, however, normally prevented by a latching device which will now be described. 05

Pivotally supported on a stud 69 at the right hand side of the machine, is a latch 70 formed with a latching notch or seat 71, finger 73, and a lug 74. Mounted on the right-hand frame 39, see Fig. 2, is a latching 1 3 block 75, which is normally engaged by the notch or seat .71 so as to prevent swinging of the frames 39 and 40 by the spring 68. Mounted on the right-hand frame 39 is also a pin 76 which stands in the path of the 10's finger 73. And adjustably mounted. on the rear end of the lever 58 is a roller 77 which normally rests under lug 74 as shown in Fig. 2. 4

When the shaft 48 is rotated to effect car- 110 riage shifting, the roller 77 is immediately raised against lug 74 thereby rotating member 70 clockwise so as to unlatch the block 75 from the seat 71. Thus spring 68 is free to take effect and by moving link 67 115 rotate both frames. However, in order to positively insure swinging of the frames w1t h1n the time limit permitted, the roller 77 in riding up to the front edge of member 70, forms finger 73 against pin 76 forcin 12G frame 39 to rotate counter-clockwise, an thru link 67 also forcing a similar movement of frame 40.

When the frames 39 and 40 are unlatched and rotated to the position shown in Fig. 3, 125 they remain in this position until the machine is operated, at which time they are returned to normal position shown in Fig. 2. It will be noted that in reversible-cycle machines of the Monroe type, there is a considerable we moved to the portion .of the beginning of the cycle wliether additive or subtractive which is passed thru before the actuating gears become effective. It'is during this portion of the operation that the frames are returned. The mechanism for returning the frames to normal will now be described.

Mounted on opposite ends of the carr shaft 37 are cam disks 7 8-each formed wit two cams 79 and 80 connected by inner and outer concentric portions 81 and 82. The cam disk 78 at the right-hand side has been removed in Fi 2 and 3 for the sake of clearness as hot disks are identical in form and angular set. When the machine is in full-cycle position the cams 79 and 80 of each disk are arrangedon opposite sides of" a roller 83 carried by a stationary stud 84 on the adjacent frame. When the frames are in latched condition as shown in Fig. 2, the low concentric portion 81 of each'disk is opposite the respective roller 83, so that if the frames are unlatched, they may move to the position shown in Fig. 3. If an operation of the machine is effected with the frames latched, the rollers 83 ride on the high parts 82 of thecam disks7 8, positively preventing swinging of the frames during the critical portion of the cycle in either direction. I

the frames are unlatched and osition shown in Fig. 3, andthen the machine is operated in either direction, either the cams 79 or the cams will ride against the rollers 83 and the frames will be forced back into latched position. As the frames are thus rotated, the latching block 75 moves into registry with notch 71, and member 70 is caused to rotate counterclockwise. so as to bring the seat 71 into errgggement with the latching block 75. Memr 70 is caused to make this counter-clockwise movement by a suitable spring 700.

Another old feature of the machine which may be mentioned for the sake of clearness is that the carria e 28 is provided with a hinge r'od 85 whic slides in suitable bearings supported by the main frames of the machine. Referring particularl to Figs. 1, 4, and 5, means are shown for s ifting the carriage by hand any desired number of denominational spaces in either direction. This means includes a handle or finger-piece 850 secured to an upwardly. extending armfof a rocker member 86 pivoted by a pin 87 to the inside of the front of the carriage frame; Rocker 86 is formed with oppositely disposed fingers 88 which extend under respective pins 89 projecting from the rack bar 51. A spring QOcentralizes the member 86.

By pressing laterally-against either side of fingerpiece 850., member will be rocked and one of its fingers 88 will raise its cooperative pin 89, thereby lifting rack 51. This effects lifting of mcinitmrs 6'7 and 58 with the I result that the frames 39 and 40 are unlatched and swing to the sition shown in Fig. 3, and themachine is ocked against operation by lug '62. As soon as the rack 51' has been raised high enough to escape rollers 50, the carriage is moved in the desired direction by continued pressure against member 85. When the deslred column is reached, finger-piece 850 is released and the parts return to normal, the members 50 and 51 coacting to insure the proper relationship between the carriage parts and the machine parts.

While I have described what I consider to be the most desirable embodiment of my invention for the purpose set forth, it is obvious that changes in form could be made without departin from the spirit of my invention, and I, t erefore, do not limit myself to the. exact details herein shown and described, or to anything less than the whole of my invention as hereinafter particularly pointed out in the claims.

I claim:

1. In a; calculating machine the combination of a set of register wheels, difierential actuators therefor, intermediate transmitting means between said actuators and said register wheels, a carriage supporting said register wheels and movable relatively to said actuators, means for moving said car-' cally operable upon initiating an operation of said carriage for movin said transmission means to ineffective position, and means operable upon initiating a'cycle of operation of the machine, for automatically returning said transmission means to effective position.

3. In a calculating machine, the Combination of a set of register wheels, a set of actuators therefor, intermediate gears for transmitting movement from said actuators to said register wheels, a transversely movable carriage supporting said register wheels, means for shifting said carriage transversely, a swinging frame supporting said intermediate gears, a latching device for holdi-ng said frame with the intermediate lgears in engagement with said register w eels, and means operable by the carriage shifting means to render said latching device inefl'ective. I a

4. In a calculating machine, the combination of a set of register wheels, a set of actuators therefor, intermediate ears for transmitting movement from said actuators to said register wheels, a transversely movable carriage su porting said register wheels, means for s ifting said carriage transversely, a swinging frame supporting said intermediate gears, a latchin device for holding said frame with the intermediate gears in engagement with said register wheels, means operable by the carriage shiftin means to render said latching device ine fective, and automatic means for swinging said frame when unlatched to remove said intermediate gears from the path of the register wheels.

5. In a calculating machine, the combination of a set of register wheels, a set of actu ators therefor, intermediate gears for transmitting movement from said actuators to said .register wheels, a transversely movable carriage supporting said register wheels, means for shifting said carriage transversely, a swinging frame supporting said intermediate gears, a latching device for holding said frame with. the intermediate gears in engagement with said register wheels, means operable b the carriage shifting means to render sai latching device ineffective, automatic means for swinging said frame when unlatched to remove said intermediate gears from the path of the register wheels and means operable by said carriage I shifting means for enforcing disengaging movement of said frame.

6. In a calculating machine, the combination of a set of register wheels, a set of actuators therefor, intermediate gears between said register wheels and actuators, a carriage supporting said register wheels, a swinging frame supporting said intermediate gear, means for moving said carriage relatively to said actuators, a pivoted latching member normally positioned to hold said swinging frame in one position, and means operable by the carriage moving means for first moving said latching member to release said swinging frame and thereafter moving said latching member to enforce swinging of said frame to a second position,

7. In a calculating machine, the combination of a set of register wheels, a set of actu ators therefor, intermediate gears between said register wheels and actuators, a carriage supporting said register wheels, a

swinging frame supporting said intermedi-' ate gears, means for'moving said carriage relatively to said actuators, pivoted latching member normally positioned to hold said swinging frame in one position, means OPET- able by the carriage moving means for moving said latching member to release said swinging frame, means for moving said "i e to a second position when released,

' means for returning said frame to first position, and a member for returning said latching member to latching osition.

8. In a machine of the class escribed, the combination of a transversely movable car" riage, register wheels mounted thereon, gears for operating said register wheels, a swinging frame supporting said gears, a latch cooperative with said frame for holding its gears in effective relation to said register wheels, a finger-piece mounted on said carriage, means operable by said finger-piece for moving said latch to ineffective position, and means for swingingsaid frame when unlatched whereby said gears may be moved to position to permit transverse movement of said carriage.

9. In a machine of the class described, the combination of a transversely movable carriage, register wheels mounted thereon, gears for operating said register wheels, a swing" ing frame supporting said gears, a latch cooperative with said frame for holding its gears in effective relation to said register wheels, and a finger-piece operable for first moving said latch to ineffective position and then moving said carriage laterally.

10. In a machine of the class described, the combination of a transversely movable carriage, register wheels mounted thereon,

gears. for operating said register wheels, a swinging frame supporting said gears, a latch cooperative with said frame for bold ing its gears in effective relation to said register wheels, and a finger-piece operable in either of two directions for first moving said latch to ineffective position and then moving said carriage laterally.

11. in a machine of the class described, the combination of a transversely movable carriage, register wheels mounted thereon, gears for operating said register wheels, a swinging frame supporting said gears, a latch cooperative with said frame for bold ing its gears in effective relation to said register wheels, means for normally holding said carriage against lateral movement, and a finger-piece operable for first rendering said latch and the i .st said means ineffective and then moving said carriage laterally.

12. The combination with supporting means or a transversely movable carriage mounted thereon, a rack pivotally mounted on said carriage, a plurality of holding elements engaging said raclr, and a manipulm tive member operable in either of two directions to elieet disengagement of said racit and membersand ereafter to cited; transverse movement i rcr direction according to the direction operation of said manipulative 13. in a machine of the combination a carriage, register whe gears for operating saio i ringing trams supper 116 class described, nsversely movable canted thereon, aering wheels, a said gears, a

lit)

J latch cooperative with saidframe for holding its ears in effective relation to said reg ister w eels, a rack pivotally mounted on said carriage, means normally engaging said rack to prevent transverse movement of said 'said carriage may be freely shifted in either direction.

Signed at Orange, in the county of Essex and State of New Jersey, this 29th dayvof August A. D. 1930.

EDWIN F. BRITTEN, JR. 

